400 stroker suggestions

Hey gang, starting to spec out my next build and could use a little input. I’ve read through quite a few threads on here and other forums. I’ve built 3 small blocks but, never a big block. This will be my first.

GOAL: 500rwhp stroker that will go 50k miles minimum. (Building the family and don’t have the time to rebuild the engine every couple of years). 90%street/10%track.

Here’s what I’m thinking.

-‘72 400 mega block
-470 stroker kit (not sure which vendor) reason for wanting a 470 is to maintain piston skirt length
-10.5-1 c/r
-trickflow 240 heads
-comp cams 280/288 hydr roller
-1.6 HS Rockers
-Edelbrock RPM intake (Not a wide selection)
-Holley sniper EFI
-etc

Have any of you built something similar to this? Again, looking for a street friendly, track ready, 600 gross hp (500rwhp) build that’ll last 50k miles. Totally understand the cost of these mopars. Looking to spend the money and time to do this one right. Any thoughts?
What vehicle? I would go with a 4.15 stroke personally. Built many of them, 600HP is very easy however reliability comes from quality machining, quality parts, and quality assembly along with proper break in and tuneup! Check us out: immengines.com